时间久了以后，想找出Linux 版本信息来看看，有2个文件里面有保存。
cat /etc/redhat-release
Fedora Core release 5 (Bordeaux)
cat /etc/issue
Fedora Core release 5 (Bordeaux)
Kernel \r on an \m
还有内核的版本信息在这里：
cat /proc/version
Linux version 2.6.17-1.2145_FC5smp (brewbuilder@hs20-bc2-2.build.redhat.com) (gcc version 4.1.1 20060525 (Red Hat 4.1.1-1)) #1 SMP Sat Jul 1 13:19:14 EDT 2006